ENH: Enabled display of cursor coordinate info in t-series plots

Redefined the Matplotlib Axis.format_coord method in tseries.plotting.tsplot()

See Issue #1670

Conflicts:

	RELEASE.rst
	doc/source/v0.11.0.txt

RELEASE.rst

@@ -131,6 +131,7 @@ pandas 0.11.0
   - Add ``time()`` method to DatetimeIndex (GH3180_)
   - Return NA when using Series.str[...] for values that are not long enough
     (GH3223_)
+  - Display cursor coordinate information in time-series plots (GH1670_)
 
 **API Changes**
 
@@ -314,6 +315,7 @@ pandas 0.11.0
 .. _GH2745: https://github.com/pydata/pandas/issues/2745
 .. _GH622: https://github.com/pydata/pandas/issues/622
 .. _GH797: https://github.com/pydata/pandas/issues/797
+.. _GH1670: https://github.com/pydata/pandas/issues/1670
 .. _GH2681: https://github.com/pydata/pandas/issues/2681
 .. _GH2719: https://github.com/pydata/pandas/issues/2719
 .. _GH2746: https://github.com/pydata/pandas/issues/2746

doc/source/v0.11.0.txt

@@ -302,7 +302,8 @@ Enhancements
       ``above_below``. This allows the user to specify if they would like to
       only return forward looking data for options near the current stock
       price. This just obtains the data from Options.get_near_stock_price
-      instead of Options.get_xxx_data().  (GH2758_)
+      instead of Options.get_xxx_data() (GH2758_).
+    + Cursor coordinate information is now displayed in time-series plots.
 
   - added option `display.max_seq_items` to control the number of
     elements printed per sequence pprinting it.  (GH2979_)